diff --git a/android/app/src/main/java/by/eapp/musicroom/navigation/NavHost.kt b/android/app/src/main/java/by/eapp/musicroom/navigation/NavHost.kt
index 1c4ed9e..17f7f2f 100644
--- a/android/app/src/main/java/by/eapp/musicroom/navigation/NavHost.kt
+++ b/android/app/src/main/java/by/eapp/musicroom/navigation/NavHost.kt
@@ -1,6 +1,7 @@
 package by.eapp.musicroom.navigation
 
 
+import MainScreen
 import RegistrationScreen
 import androidx.compose.animation.AnimatedContentTransitionScope
 import androidx.compose.animation.core.LinearOutSlowInEasing
@@ -9,15 +10,32 @@ import androidx.compose.runtime.Composable
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
+import by.eapp.musicroom.screens.AuthorizationViewModel
 
 @Composable
 fun NavHostController(
     navController: NavHostController,
 ) {
+    val viewModel = AuthorizationViewModel
     NavHost(
         navController = navController,
         startDestination = Screens.RegistrationScreen.route
     ) {
+
+        composable(
+            route = Screens.MainScreen.route,
+            enterTransition = {
+                slideIntoContainer(
+                    AnimatedContentTransitionScope.SlideDirection.Left,
+                    animationSpec = tween(
+                        durationMillis = 500,
+                        easing = LinearOutSlowInEasing
+                    )
+                )
+            }
+        ) {
+            MainScreen(navController = navController, viewModel = viewModel)
+        }
         composable(
             route = Screens.RegistrationScreen.route,
             enterTransition = {
diff --git a/android/app/src/main/java/by/eapp/musicroom/navigation/Screens.kt b/android/app/src/main/java/by/eapp/musicroom/navigation/Screens.kt
index ffb47ec..3c19eee 100644
--- a/android/app/src/main/java/by/eapp/musicroom/navigation/Screens.kt
+++ b/android/app/src/main/java/by/eapp/musicroom/navigation/Screens.kt
@@ -6,4 +6,5 @@ sealed class Screens(
     data object RegistrationScreen: Screens("registration")
     data object LoginScreen: Screens("login")
     data object MainScreen: Screens("main")
+    data object SubmitCode : Screens("submit_code")
 }
\ No newline at end of file
diff --git a/android/app/src/main/java/by/eapp/musicroom/screens/AuthorizationViewModel.kt b/android/app/src/main/java/by/eapp/musicroom/screens/AuthorizationViewModel.kt
index 2f864ed..560896c 100644
--- a/android/app/src/main/java/by/eapp/musicroom/screens/AuthorizationViewModel.kt
+++ b/android/app/src/main/java/by/eapp/musicroom/screens/AuthorizationViewModel.kt
@@ -1,6 +1,8 @@
 package by.eapp.musicroom.screens
 
+import android.content.Context
 import android.util.Log
+import android.widget.Toast
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import by.eapp.musicroom.data.login.repo.AuthAuthenticator
@@ -8,6 +10,7 @@ import by.eapp.musicroom.domain.model.LoginData
 import by.eapp.musicroom.domain.model.RegistrationData
 import by.eapp.musicroom.domain.model.SubmitData
 import by.eapp.musicroom.domain.repo.login.AuthorizationService
+import dagger.hilt.android.internal.Contexts.getApplication
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
@@ -75,7 +78,7 @@ class AuthorizationViewModel @Inject constructor(
             is LoginScreenAction.LoginUser -> loginUser(action.loginData)
             is LoginScreenAction.RegisterUser -> registerUser(action.registrationData)
             is LoginScreenAction.SubmitCode -> submitCode(action.submitData)
-            LoginScreenAction.NavigateToSubmitCode -> TODO()
+            is LoginScreenAction.ShowError -> showToast(action.text, context = action.context)
         }
     }
 
@@ -84,13 +87,38 @@ class AuthorizationViewModel @Inject constructor(
         const val TAG = "AuthorizationViewModel"
     }
 
+    sealed class Effect(private var isHandled: Boolean = false) {
+        fun runIfNotHandled(action: (Effect) -> Unit) {
+            if (!isHandled) {
+                action(this)
+                isHandled = true
+            }
+        }
+
+        class Exit : Effect(false)
+        class None : Effect(true)
+    }
+
+    fun showToast(text: String, context: Context) {
+        Toast.makeText(getApplication(context), text, Toast.LENGTH_SHORT).show()
+    }
+
+    fun enableButton(
+        email: String,
+        password: String,
+        repeatPassword: String,
+        nickname: String,
+    ): Boolean {
+        return (email.isNotEmpty() && password.isNotEmpty() && repeatPassword.isNotEmpty() && nickname.isNotEmpty())
+    }
+
 }
 
 sealed interface LoginScreenAction {
-    data object NavigateToSubmitCode : LoginScreenAction
     data class LoginUser(val loginData: LoginData) : LoginScreenAction
     data class RegisterUser(val registrationData: RegistrationData) : LoginScreenAction
     data class SubmitCode(val submitData: SubmitData) : LoginScreenAction
+    data class ShowError(val text: String, val context: Context) : LoginScreenAction
 }
 
 sealed interface LoginScreenState {
diff --git a/android/app/src/main/java/by/eapp/musicroom/screens/view/registration/RegistrationScreen.kt b/android/app/src/main/java/by/eapp/musicroom/screens/view/registration/RegistrationScreen.kt
index 164e023..42b8e11 100644
--- a/android/app/src/main/java/by/eapp/musicroom/screens/view/registration/RegistrationScreen.kt
+++ b/android/app/src/main/java/by/eapp/musicroom/screens/view/registration/RegistrationScreen.kt
@@ -7,6 +7,7 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -23,24 +24,52 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.navigation.NavHostController
 import by.eapp.musicroom.R
+import by.eapp.musicroom.domain.model.RegistrationData
 import by.eapp.musicroom.navigation.Screens
+import by.eapp.musicroom.screens.AuthorizationViewModel
+import by.eapp.musicroom.screens.LoginScreenAction
+import by.eapp.musicroom.screens.LoginScreenState
+import by.eapp.musicroom.screens.components.LoadingScreen
 import by.eapp.musicroom.screens.components.LogInButton
 import by.eapp.musicroom.screens.components.PasswordTextInputField
 import by.eapp.musicroom.screens.components.TextInputField
 
+@Composable
+fun MainScreen(
+    navController: NavHostController,
+    viewModel: AuthorizationViewModel,
+) {
+    val stateUi by viewModel.stateUi.collectAsState()
+    when (stateUi) {
+        LoginScreenState.Init -> LoadingScreen()
+        LoginScreenState.Loading -> LoadingScreen()
+        LoginScreenState.Success -> RegistrationScreen(navController, viewModel)
+        is LoginScreenState.Error -> {
+            viewModel.showToast(
+                "Error: ${(stateUi as LoginScreenState.Error).error?.message}",
+                LocalContext.current
+            )
+        }
+    }
+}
+
 
 @Composable
 fun RegistrationScreen(
-    navController: NavHostController
+    navController: NavHostController,
+    viewModel: AuthorizationViewModel,
 ) {
     var nickname by rememberSaveable { mutableStateOf("") }
     var email by rememberSaveable { mutableStateOf("") }
 
-    var password by remember { mutableStateOf("") }
-    var repeatPassword by remember { mutableStateOf("") }
-    var showPassword by remember { mutableStateOf(false) }
-    var showRepeatPassword by remember { mutableStateOf(false) }
+    var password by rememberSaveable { mutableStateOf("") }
+    var repeatPassword by rememberSaveable { mutableStateOf("") }
+    var showPassword by rememberSaveable { mutableStateOf(false) }
+    var showRepeatPassword by rememberSaveable { mutableStateOf(false) }
+
+    val state by viewModel.stateUi.collectAsState()
 
+    val context = LocalContext.current
     Column(
         modifier = Modifier
             .fillMaxSize()
@@ -80,11 +109,13 @@ fun RegistrationScreen(
         )
         //passwords
         Spacer(modifier = Modifier.height(20.dp))
+
         Text(
             text = "Password",
             modifier = Modifier.padding(bottom = 5.dp),
             color = Color.White
         )
+
         PasswordTextInputField(
             password = password,
             onPasswordChange = { password = it },
@@ -94,21 +125,50 @@ fun RegistrationScreen(
 
         // Repeat password field
         Spacer(modifier = Modifier.height(20.dp))
+
         Text(
             text = stringResource(R.string.mr_repeat_password),
             modifier = Modifier.padding(bottom = 5.dp),
             color = Color.White
         )
+
         PasswordTextInputField(
             password = repeatPassword,
             onPasswordChange = { repeatPassword = it },
             showPassword = showRepeatPassword,
             onShowPasswordChange = { showRepeatPassword = it }
         )
+
         Spacer(modifier = Modifier.height(40.dp))
+
         LogInButton(
-            enabled = true,
-            onClick = {}
+            enabled = viewModel.enableButton(
+                nickname = nickname,
+                email = email,
+                password = password,
+                repeatPassword = repeatPassword
+            ),
+            onClick = {
+                if (password == repeatPassword) {
+                    viewModel.dispatch(
+                        LoginScreenAction.RegisterUser(
+                            RegistrationData(
+                                nickname = nickname,
+                                email = email,
+                                password = password
+                            )
+                        )
+                    )
+                } else {
+                    viewModel.dispatch(
+                        LoginScreenAction.ShowError(
+                            context.getString(R.string.mr_passwords_dont_match),
+                            context
+                        )
+                    )
+                }
+
+            }
         )
 
         Spacer(modifier = Modifier.height(40.dp))
@@ -144,5 +204,5 @@ fun PasswordTextInputFieldPreview() {
 @Preview
 @Composable
 fun RegistrationScreenPreview() {
-    RegistrationScreen(navController = NavHostController(context = LocalContext.current))
+    // RegistrationScreen(navController = NavHostController(context = LocalContext.current))
 }
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index f28625e..5904854 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -9,5 +9,6 @@
     <string name="mr_placeholder_nickname">nastix123</string>
     <string name="mr_repeat_password">Repeat password</string>
     <string name="mr_already_have_an_account">Already have an account?</string>
-    <string name="mr_submit_code">Подтвердите код</string>
+    <string name="mr_submit_code">Submit code</string>
+    <string name="mr_passwords_dont_match">Passwords don\'t match</string>
 </resources>
\ No newline at end of file